第五单元自主检测1: 0.5 0.3 3.9 0.48 0.021 8 40 0.62: (1)0.074×0.15=0.0111 (2) 0.9÷0.75=1.2(3)2.07÷0.23=93. (1) 5×7.26÷1.2 = 36.3÷1.2 = 30.25 (2) 0.25×1.58×4 = 0.25×4×1.58 = 1×1.58 = 1.58 (3)78.5×0.8-8.5×0.8 = 0.8×(78.5-8.5) = 0.8×70 = 56 (4)99×1.24+1.24 = 1.24×(99+1) = 1.24×100 = 124 (5)4.35+0.17+0.65+0.83 = (4.35+0.65 |